The Rab Ascent -12C / 10F Down Sleeping Bag in Wide fit is engineered for adventurers who need more room to sleep comfortably. With a generously wide mummy shape and a roomy 3D footbox, this bag gives your body the space it deserves — without sacrificing warmth or packability.
Whether you're broader-shouldered, wider in the hips or belly, a side sleeper, or simply prefer extra room to move, the Ascent Wide delivers all-night comfort down to -12°C.
Why the Wide Fit Works
Wider mummy cut accommodates broader shoulders and larger frames
Roomy anatomical footbox reduces pressure and allows natural foot positioning
Sidewall baffle construction adds loft at the sides — where wider sleepers need it most
Internal cordlocks positioned below the collar bone for unrestricted side sleeping
Premium Down Performance
650FP European duck down with fluorocarbon-free hydrophobic finish (680g fill)
L.O.F.T™ baffle technology locks down in place for consistent warmth
3D neck collar with recycled Stratus™ insulation seals in heat
Anatomically fitted hood with drawcord adjustment
Practical Details
Temperature rating: Limit: -12°C, Comfort: -5°C, Extreme: -33°C.
Temperature rated to ISO 23537-2:2022
2-way YKK® ¾-length main zip with synthetic-filled baffle
YKK® zipped arm access vent with snap closure
YKK® internal stash pocket
Anti-snag zip insert and internal zip guard
Drawcord stuff sack + zipped storage sack with water-resistant base
Shell: 20D Pertex® Quantum nylon ripstop (38g/m²), fluorocarbon-free DWR Lining: Recycled 20D nylon, 38g/m² Hand-filled in Derbyshire, UK
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